The A, S, J, K and L keys must be pressed according to the color of the note that is in the "detector". They respectively control the green, red, yellow, blue and orange notes.
Located in the left corner, it increases with hits and decreases with misses. If the indicator reaches zero, the game is over.
Located in the right corner, it indicates how much the points are being multiplied with the hits. If there is an error, the multiplier resets.
Located next to the multiplier, it indicates how much "special" can be used. The special can only be activated when the bar reaches halfway, with the space key.
The project already comes with the libs compiled for use in the 64-bit Windows system. Just compile using the settings already defined in the Visual Studio project.